UMI Performance 240131-R Tubular K-Member & A-Arm Kit Red Powdercoat | Factory Springs

The UMI Performance 240131-R is a direct bolt-in tubular K-member and lower A-arm kit engineered for maximum front-end performance. Shedding 25 lbs of front-end weight compared to the factory subframe, this kit is purpose-built to handle everything from daily street driving to drag strip launches and autocross competition—all without cutting or grinding.

The K-member is constructed from CNC-machined 3/16" thick mild steel mounting plates joined by a robust dual-tube lower section. The main center tube uses 1.500" x 0.120" seamless steel tubing, while additional cross braces utilize 1.250" x 0.120" seamless steel tubing for a rigid, lightweight structure. Factory locator pins are included for precise, hassle-free installation, and all mounting plates are CNC-machined for exact hole-to-hole accuracy. Lightening holes further reduce weight while tubular construction opens up valuable clearance for aftermarket exhaust routing.

The included lower A-arms feature TIG-welded tubular construction with pre-installed polyurethane bushings, adjustable steering stops, and a spring locating pocket that supports both stock and lowering springs. Rear A-arm mounts are gusseted to withstand extreme side loads, and the lower A-arm slots provide a 1/2" of adjustment for dialing in front-end geometry.

LSX Motor Mount Option: An optional LSX motor mount package allows fitment of any LSX engine to the UMI K-member. These fabricated mounts are compatible with factory rubber LS motor mounts, aftermarket polyurethane mounts, or UMI's own solid motor mounts (P/N 2323).

Key Features:

• Direct bolt-in installation — no cutting or grinding required
• Removes approximately 25 lbs of front-end weight
• Dual-tube center section for superior rigidity over competing designs
• CNC-machined 3/16" thick mild steel engine and suspension mounts
• Main tube: 1.500" x 0.120" seamless steel; cross braces: 1.250" x 0.120" seamless steel
• All mounting plates CNC-machined for precise hole-to-hole accuracy
• Factory locator pins included for easy, exact fitment
• Completely fixture-welded — no grinding or fitting required
• TIG and MIG-welded construction throughout
• Rear A-arm mounts gusseted for extreme side-load resistance
• Lower A-arms include polyurethane bushings and adjustable steering stops
• Compatible with factory springs, lowering springs, and coil-overs (modular design)
• Lightening holes CNC-machined into mounting plates
• Tubular construction adds clearance for aftermarket exhaust
• Optional LSX motor mount configuration available
• Durable red powdercoat finish (black also available as 240131-B)
• Includes all necessary mounting hardware
• Manufactured in Philipsburg, PA — USA

Sold as a complete kit including the tubular K-member and lower A-arm pair. The modular design also accommodates coil-overs and LS engine swap mounts, making this an ideal foundation for builds ranging from mild street machines to dedicated track cars.